UPDATE public.r_road_polyline SET kind_new=1 WHERE kind like '01%';
select * INTO r_road_test from public.r_road_polyline WHERE "geom" && ST_SetSRID('BOX3D(115.37499996 39.41667,117.50000004 41.08332996)'::box3d, 4326);
SELECT AddGeometryColumn('public', 'r_road_test', 'geom_simple', 4326, 'LineString', 3);
UPDATE public.r_road_test SET geom_simple=ST_SimplifyPreserveTopology(geom , 0.000006);
select sum(geomLength)/1024/1024.0 as sum_geomLength, sum(geomSimpleLength)/1024/1024.0 as sum_geoSimpLength from (SELECT pg_column_size(geom) as geomLength, pg_column_size(geom_simple) as geomSimpleLength
FROM public.r_road_test) as sumTable;
SELECT AddGeometryColumn('public', 'r_lake_simple', 'geom_simple', 4326, 'Polygon', 2);
UPDATE public.r_lake_simple SET geom_simple=ST_SimplifyPreserveTopology(geom , 0.01);
SELECT * INTO t_tianlu_polyline from r_road_polyline WHERE name like '%草原天路%';
select pg_column_size(tile_data) from *_tile
"select max(geomLength)/1024/1024.0 as max_geomLength, maxTable.z from (SELECT pg_column_size(tile_data) as geomLength, x, y, z
FROM public.beijing_map_1115_tile) as maxTable group by maxTable.z order by maxTable.z;"
select relname, pg_size_pretty(pg_relation_size(relid)) from pg_stat_user_tables where schemaname='public' order by pg_relation_size(relid) desc;
select indexrelname, pg_size_pretty(pg_relation_size(relid)) from pg_stat_user_indexes where schemaname='public' order by pg_relation_size(relid) desc;
select pg_size_pretty(pg_relation_size('表名')); select pg_size_pretty(pg_total_relation_size('quanqiu_map_1214_tile'));
select pg_size_pretty(pg_database_size('数据库名'));
alter table r_road_polyline alter funcclass type int using funcclass::int;
UPDATE public.r_road_polyline SET geom_new=ST_Transform(ST_Force2d(geom), 3857) ;
SELECT st_asgeojson(ST_Transform(ST_SetSRID(ST_Point(70.364370,0.556136),4326) ,3857))
NAME like '%青海湖%' or "NAME" like '%色林错%' or "NAME" like '%纳木错%' or "NAME" like '%艾比湖%' or "NAME" like '%博斯腾湖%' or "NAME" like '%洞庭湖%' or "NAME" like '%太湖%' or "NAME" like '%鄱阳湖%' or "NAME" like '%洪泽湖%' or "NAME" like '%呼伦湖%' or "NAME" like '%兴凯湖%' or "NAME" like '%微山湖%' or "NAME" like '%昭阳湖%' or "NAME" like '%独山湖%' or "NAME" like '%南阳湖%' or "NAME" like '%成子湖%' or "NAME" like '%高邮湖%' or "NAME" like '%巢湖%' or "NAME" like '%乌伦古湖%' or "NAME" like '%赛里木湖%' or "NAME" like '%鄂陵湖%' or "NAME" like '%扎陵湖%' or "NAME" like '%龙羊峡水库%' or "NAME" like '%库%' or "NAME" like '%湖%' or "NAME" like '%错%'